Challenge 2: Rigging a Dyntopo Sculpt Directly Turns Out Slow and Hard to Control — Solution Walkthrough

The answer:

Per this chapter's own warning box, this is exactly the risk it
describes — treating a finished sculpt, especially one built with
Dyntopo, as immediately ready for rigging without an intermediate
retopology step. The student's rigging and animation difficulties
match precisely the problem this chapter identifies with skipping that
step.

Why the raw sculpt causes these specific problems:

A dense, irregular sculpted mesh has far too many unevenly-distributed
vertices for rigging and animation to work efficiently — per this
chapter's own material, this makes both processes slower and harder to
control predictably, exactly the frustration described in this
scenario.

What step was likely skipped:

Per this chapter's own material, retopology — building a new, cleaner
mesh that follows the sculpted shape's own surface at a much lower and
more evenly distributed density — is the usual necessary step before a
sculpted character actually gets rigged and animated. Skipping
straight from a dense Dyntopo sculpt to rigging bypasses this
essential intermediate step entirely.

WHY THIS WORKS AS AN ANSWER
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This exercise checks that difficulty rigging a raw Dyntopo sculpt is
correctly traced back to a skipped retopology step, per this chapter's
own explicit warning about sculpted meshes not being production-ready
as-is.